In executing repousse work, first cut out the brass, copper, or other material rather larger than the pattern to be produced. The metal must then be hammered flat, and ground and glazed on the face side. It is then ready for the pattern to be traced on it. The grinding may be done on a stone or an emery wheel. After the pattern has been hammered up, the plate is buffed on a buff, using finest emery and crocus boiled together with mutton suet. This material may be purchased in cakes and bars. The plate is then immersed in strong boiling lye water (soda and water), and thoroughly washed with brushes- this removes all dirt from the crevices. The plate is now ready for polishing, which is done over a dolly running at a very high speed, using crocus with a little rouge The dolly is a number of circular sheets of calico about 12 in. in diameter, fastened together in the centre.